Home / 2,909.02-4,005.69-2,605.60

Finding the Fourth Proportional to 2,909.02, 4,005.69 and 2,605.60

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Solution

The fourth proportional to 2,909.02, 4,005.69 and 2,605.60 is: 3,587.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.02 : 4,005.69 = 2,605.60 : x
  2. Step 2: Convert to fraction form
    2,909.02/4,005.69 = 2,605.60/x
  3. Step 3: Cross multiply
    2,909.02x = 4,005.69 × 2,605.60
  4. Step 4: Simplify right side
    2,909.02x = 10,437,225.86
  5. Step 5: Solve for x
    x = 10,437,225.86/2,909.02
  6. Step 6: Final answer
    x = 3,587.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.